Start the Arduino software and load the Arduino Motion Sensor example program by clicking File->Sketchbook->Open

Navigate to the motion_sensor_for_arduino folder and select the “motion_sensor_for_arduino.pde” file.

Transfer the Arduino Motion Sensor program to your Arduino board by clicking the “Upload to I/O board” button. After uploading, you should see the LED on the Arduino board light up whenever there is motion detected.

It is that simple to add motion detection to your Arduino project.

Remember, it takes about 60 seconds after you first power up the motion sensor before it stars to detect motion.

You can adjust the amount of time that the motion detector lights the Arduino LED by adjusting the potentiometer screw on the back of the motion sensor module: